<template>
  <div class='login-container'>
    <div class="login-box">
      <div class="title-box"></div>
      <el-form :model="ruleForm" ref="ruleForm" :rules="rulesObj">
        <el-form-item prop="username">
          <el-input v-model="ruleForm.username" placeholder="请输入用户名"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input type="password" v-model="ruleForm.password" placeholder="请输入密码"></el-input>
        </el-form-item>
        <el-form-item>
          <el-button @click="loginBtn" class="btn-login" type="primary">登录</el-button>
          <el-link type="info" @click="$router.push('/reg')">去注册</el-link>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
import user from '@/api'
import { mapMutations } from 'vuex'

export default {
  name: 'MyLogin',
  components: {},
  data () {
    return {
      // 表单数据对象
      ruleForm: {
        username: '',
        password: ''
      },
      // 表单规则对象
      rulesObj: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          {
            pattern: /^[A-Za-z0-9]{1,10}$/,
            message: '用户名必须是1-10的大小写字母数字',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            pattern: /^\S{6,15}$/,
            message: '密码必须是6-15的非空字符',
            trigger: 'blur'
          }
        ]
      }
    }
  },
  computed: {},
  watch: {},
  methods: {
    ...mapMutations(['UpdateToken']),
    // 1.登录点击事件
    loginBtn () {
      // 1.1再次校验查看是否通过[兜底校验]
      this.$refs.ruleForm.validate(async valid => {
        if (valid) {
          // 通过校验
          const { data: res } = await user.login(this.ruleForm)
          if (res.code === 0) {
            this.$message.success(res.message)
            // 保存token到vuex中
            this.UpdateToken(res.token)
            this.$router.push('/')
          } else {
            this.$message.error('用户名或密码错误!')
          }
        } else {
          // 未通过校验，阻止默认提交行为
          return false
        }
      })
    }
  },
  created () {

  },
  mounted () {

  }
}
</script>
<style scoped>
.login-container {
  background: url('@/assets/images/login_bg.jpg') center;
  background-size: cover;
  height: 100%;
}

.login-box {
  width: 400px;
  height: 280px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 0 30px;
  box-sizing: border-box;
}

.title-box {
  height: 60px;
  background: url('@/assets/images/login_title.png') center no-repeat;
}

.btn-login {
  width: 100%;
}
</style>
